He knows enough who knows how to live and keep his own counsel.
More French Proverbs:
Between man and woman there is little difference, but vive la difference.French
To know all is to forgive all.
French
There's no showing the wolf to a bad dog.
French
Life is a dung pie from which you take a bite every day.
French
He that is too much in haste, may stumble on a good road.
French
The early bird catches the early worm.
French